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vivado [14]
3 years ago
7

Solve by using substitution. y=3x 2x+ 5y = 34​

Mathematics
2 answers:
klemol [59]3 years ago
8 0
If ur solving for x and y the answer is:

x=2 and y=6

my work below: (hope this helps!)

viktelen [127]3 years ago
4 0

Answer:

x= 3y

​x=− 25y+17

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Geoff and hazel bought a new car for $25,000. The car loses approximately 15% of its value each year.
igor_vitrenko [27]

Answer:

69 tht is the answer if you work it out

Step-by-step explanation:


7 0
3 years ago
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Am i correct ??????????????????????????
german
2 6/12 is the right answer
4 0
3 years ago
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Write a word phrase for each algebraic expression. <br> 25-0.6x<br> 2/3y+4<br><br> 10 points
umka2103 [35]

Answer:

  • 60 percent of a number subtracted from 25
  • 4 more than 2/3 of a number

Step-by-step explanation:

"60 percent of a number subtracted from 25" is a phrase that translates into 0.6 for 60% and "of a number" as 0.6x. Take this number and its subtracted from 25: 25-0.6x.

"4 more than two thirds of a number" is a phrase that translates into addition for "4 more" and multiplication with "two thirds of a number". This means 4 + 2/3y.

8 0
3 years ago
Prove that C(50,3) + C(50,4) = C(51,4)
valkas [14]

By definition of the binomial coefficient,

C(n,k) = \dfrac{n!}{k!(n-k)!}

so we have

C(50,3) + C(50,4) = \dfrac{50!}{3!47!} + \dfrac{50!}{4!46!} \\\\ = \dfrac{50!}{3!46!} \left(\dfrac1{47} + \dfrac14\right) \\\\ = \dfrac{50!}{3!46!} \times \dfrac{51}{188} \\\\ = \dfrac{51!}{3!46!} \times \dfrac1{4\times47} \\\\ = \dfrac{51!}{4!47!} \\\\ = \dfrac{51!}{4!(51-4)!} = C(51,4)

as required.

5 0
2 years ago
On a coordinate plane, which point lies on the y-axis? A) (6, 6) B) (0, 6) C) (6, 0) D) (6, 6)
bezimeni [28]

Answer:

<h2>B) (0, 6)</h2>

Step-by-step explanation:

If the point lies on the y-axis then the first coordinate of the point is equal 0.

(0, y) - y is any real number.

5 0
3 years ago
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